Constant-temperature incubator



FIG. 1 is a perspective view of a first embodiment of a constant-temperature incubator showing our new design;

FIG. 2 is a front elevation view of FIG. 1;

FIG. 3 is a rear elevation view of FIG. 1;

FIG. 4 is a top plan view of FIG. 1;

FIG. 5 is a bottom plan view of FIG. 1;

FIG. 6 is a right side view of FIG. 1;

FIG. 7 is a left side view of FIG. 1;

FIG. 8 is a perspective view of a second embodiment of a constant-temperature incubator showing our new design;

FIG. 9 is a front elevation view of FIG. 8;

FIG. 10 is a rear elevation view of FIG. 8;

FIG. 11 is a top plan view of FIG. 8;

FIG. 12 is a bottom plan view of FIG. 8;

FIG. 13 is a right side view of FIG. 8; and,

FIG. 14 is a left side view of FIG. 8. 

The ornamental design for a constant-temperature incubator, as shown and described. 